Overview
The ADuM1400CRW, produced by Analog Devices Inc., is a quad-channel digital isolator based on the company's proprietary iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technology to provide superior performance characteristics compared to traditional optocoupler devices. The ADuM1400CRW eliminates the design difficulties associated with optocouplers, such as uncertain current transfer ratios, nonlinear transfer functions, and temperature and lifetime effects. It offers stable performance, low power consumption, and the elimination of the need for external drivers and discrete components.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|
| Input Supply Current per Channel, Quiescent (IDDI(Q)) | 0.50 | 0.53 | - | mA | 5 V/3 V Operation |
| Output Supply Current per Channel, Quiescent (IDDO(Q)) | 0.11 | 0.14 | - | mA | 5 V/3 V Operation |
| Total Supply Current, Four Channels (IDD1(Q), IDD2(Q)) | 2.2 | 2.8 | - | mA | DC to 1 MHz logic signal freq., 5 V/3 V Operation |
| Maximum Data Rate | 90 | - | 120 | Mbps | CL = 15 pF, CMOS signal levels |
| Propagation Delay (tPHL, tPLH) | 18 | - | 32 | ns | CL = 15 pF, CMOS signal levels |
| Pulse Width Distortion (PWD) | 0.5 | - | 2 | ns | CL = 15 pF, CMOS signal levels |
| Change vs. Temperature | - | - | 3 | ps/°C | CL = 15 pF, CMOS signal levels |
Key Features
- High-Speed CMOS and Monolithic Air Core Transformer Technology: Provides superior performance compared to optocouplers, eliminating issues like uncertain current transfer ratios and nonlinear transfer functions.
- Low Power Consumption: Consumes one tenth to one sixth of the power of optocouplers at comparable signal data rates.
- No External Drivers Required: Eliminates the need for external drivers and discrete components, simplifying the design process.
- Stable Performance Characteristics: Offers stable performance across various operating conditions, including temperature and lifetime effects.
- Quad-Channel Isolation: Provides four independent isolation channels in various channel configurations and data rates.
Applications
- Industrial I/O and Control Systems: Suitable for industrial environments requiring reliable and high-speed data isolation.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces.
- Medical Devices: Applicable in medical devices where isolation is critical for safety and compliance.
- Powerline Communications and Signal Integrity: Utilized in powerline communications and to maintain signal integrity in various applications.
- RS-232 / RS-422 / RS-485 Interfaces: Used in serial communication interfaces requiring high-speed data isolation.
Q & A
- What is the ADuM1400CRW?
The ADuM1400CRW is a quad-channel digital isolator based on Analog Devices' iCoupler® technology.
- What are the key advantages of the ADuM1400CRW over optocouplers?
The ADuM1400CRW offers superior performance, lower power consumption, and eliminates the need for external drivers and discrete components, while providing stable performance characteristics.
- What is the maximum data rate of the ADuM1400CRW?
The maximum data rate is 90 to 120 Mbps.
- What is the propagation delay of the ADuM1400CRW?
The propagation delay (tPHL, tPLH) ranges from 18 to 32 ns.
- What are the typical applications of the ADuM1400CRW?
It is used in industrial I/O, automotive interfaces, medical devices, powerline communications, and serial communication interfaces.
- How does the ADuM1400CRW handle temperature and lifetime effects?
The ADuM1400CRW offers stable performance characteristics that are not significantly affected by temperature and lifetime effects.
- What is the power consumption of the ADuM1400CRW compared to optocouplers?
The ADuM1400CRW consumes one tenth to one sixth of the power of optocouplers at comparable signal data rates.
- Does the ADuM1400CRW require external drivers?
No, the ADuM1400CRW does not require external drivers or discrete components.
- How many isolation channels does the ADuM1400CRW provide?
The ADuM1400CRW provides four independent isolation channels.
- What is the change in propagation delay versus temperature for the ADuM1400CRW?
The change in propagation delay versus temperature is 3 ps/°C.
